EP0078982A1 - Electromechanical positioning drive - Google Patents

Electromechanical positioning drive Download PDF

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Publication number
EP0078982A1
EP0078982A1 EP82109912A EP82109912A EP0078982A1 EP 0078982 A1 EP0078982 A1 EP 0078982A1 EP 82109912 A EP82109912 A EP 82109912A EP 82109912 A EP82109912 A EP 82109912A EP 0078982 A1 EP0078982 A1 EP 0078982A1
Authority
EP
European Patent Office
Prior art keywords
drive
electric motor
springs
motor
output member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82109912A
Other languages
German (de)
French (fr)
Inventor
Horst Dr.Dipl.-Ing. Hesse
Dieter Dipl.-Ing. Weigle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0078982A1 publication Critical patent/EP0078982A1/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H2025/2062—Arrangements for driving the actuator
    • F16H2025/2068—Means for returning linear actuator to zero position, e.g. upon occurrence of failure by using a spring

Definitions

  • the invention is based on an electro-mechanical actuator according to the preamble of the main claim.
  • Actuators of this type usually work in a way-integrating manner in on / off operation. In the event of a power failure (engine standstill), the current position is maintained.
  • Such drives are not suitable for cases in which a specific requirement regarding the position of the link to be actuated is necessary.
  • the actuator according to the invention with the characterizing features of the main claim has the advantage that it works proportionally, ie the adjustment path is proportional to the motor voltage, and in the event of a power failure, the link to be actuated is returned to a fixed position, eg middle position.
  • a direct current electric motor 10 drives a non-self-locking mechanical adjustment gear via a slip clutch 11, the output member 13 of which executes a linear movement.
  • This transmission can, for example, very simply be a rotating nut with an output member designed as a high-helix spindle or a gearwheel with an output member designed as a rack. The latter is centered in a fixed central position by two springs 14, 15 supported fixed to the housing when the electric motor is not actuated.
  • the slip clutch 11 transmits the torque proportional to the drive speed of the electric motor 10.
  • the voltage results in its speed, i.e. the clutch torque and thus the actuating force at the output member 13 of the transmission is converted into a specific position thereof via the springs 14, 15.
  • both adjustment devices are possible. If the electric motor fails, the output member 13 is returned to its center position or centered in it by the springs 14, 15 as a result of the non-self-locking transmission. This fulfills a so-called failsafe requirement.
  • the actuator according to the invention works in a proportional manner, i.e. the travel is proportional to the voltage on the electric motor.
  • Such an actuator is particularly suitable for actuating hydraulic valves.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The positioning drive has an electric motor (10) which drives a non-self-locking drive (12) via a slip clutch (11). The one output element (13) of the drive, executing a straight-line movement, can be guided back to a defined centre position by springs (14, 15), for example in the event of a motor failure following the drive (12) not locking itself. Such a positioning drive operates proportionally, i.e. the positioning movement of the output element is proportional to the motor voltage. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem elektro-mechanischen Stellantrieb nach der Gattung des Hauptanspruchs. Derartige Stellantriebe arbeiten üblicherweise wegintegrierend im Ein-/Ausbetrieb. Bei Stromausfall (Motorstillstand) wird die momentane Stellung beibehalten. Für solche Fälle, in denen eine bestimmte Forderung bezüglich der Stellung des zu betätigenden Gliedes notwendig ist, sind derartige Antriebe nicht geeignet.The invention is based on an electro-mechanical actuator according to the preamble of the main claim. Actuators of this type usually work in a way-integrating manner in on / off operation. In the event of a power failure (engine standstill), the current position is maintained. Such drives are not suitable for cases in which a specific requirement regarding the position of the link to be actuated is necessary.

Vorteile der ErfindungAdvantages of the invention

Der erfindungsgemäße Stellantrieb mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß dieser proportional arbeitet, d.h. der Verstellweg ist proportional der Motorspannung, und bei Stromausfall wird das zu betätigende Glied in eine festgelegte Stellung, z.B. Mittelstellung zurückgeführt. ZeichnungThe actuator according to the invention with the characterizing features of the main claim has the advantage that it works proportionally, ie the adjustment path is proportional to the motor voltage, and in the event of a power failure, the link to be actuated is returned to a fixed position, eg middle position. drawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Diese zeigt einen elektro-mechanischen Stellantrieb in schematischer Darstellung.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. This shows a schematic representation of an electro-mechanical actuator.

Beschreibung des AusführungsbeispielsDescription of the embodiment

Ein Gleichstrom-Elektromotor 10 treibt über eine Schlupfkupplung 11 ein nicht selbsthemmendes mechanisches Verstellgetriebe an, dessen Ausgangsglied 13 eine geradlinige Bewegung ausführt. Bei diesem Getriebe kann es sich beispielsweise ganz einfach um eine rotierende Mutter mit als Steilgewindespindel ausgebildetem Ausgangsglied oder um ein Zahnrad mit als Zahnstange ausgebildeten Ausgangsglied handeln. Letzteres wird durch zwei gehäusefest abgestützte Federn 14, 15 bei nicht betätigtem Elektromotor in einer festgelegten Mittelstellung zentriert.A direct current electric motor 10 drives a non-self-locking mechanical adjustment gear via a slip clutch 11, the output member 13 of which executes a linear movement. This transmission can, for example, very simply be a rotating nut with an output member designed as a high-helix spindle or a gearwheel with an output member designed as a rack. The latter is centered in a fixed central position by two springs 14, 15 supported fixed to the housing when the electric motor is not actuated.

Die Schlupfkupplung 11 überträgt das Drehmoment proportional der Antriebsdrehzahl des Elektromotors 10. Die Stromspannung ergibt dessen Drehzahl, d.h. das Kupplungsmoment und damit die Stellkraft am Ausgangsglied 13 des Getriebes wird über die Federn 14, 15 in eine bestimmte Stellung desselben umgesetzt. Durch Ändern der Motordrehrichtung sind beide Verstelleinrichtungen möglich. Bei Ausfall des Elektromotors wird infolge des nicht selbsthemmenden Getriebes das Ausgangsglied 13 durch die Federn 14, 15 in seine Mittelstellung zurückgeführt bzw. in dieser zentriert. Dadurch erfüllt man eine sogenannte failsafe-Forderung.The slip clutch 11 transmits the torque proportional to the drive speed of the electric motor 10. The voltage results in its speed, i.e. the clutch torque and thus the actuating force at the output member 13 of the transmission is converted into a specific position thereof via the springs 14, 15. By changing the direction of motor rotation, both adjustment devices are possible. If the electric motor fails, the output member 13 is returned to its center position or centered in it by the springs 14, 15 as a result of the non-self-locking transmission. This fulfills a so-called failsafe requirement.

Der erfindungsgemäße Stellantrieb arbeitet proprotional, d.h. der Stellweg ist proportional der Spannung am Elektromotor. Ein solcher Stellantrieb eignet sich besonders zur Betätigung hydraulischer Ventile.The actuator according to the invention works in a proportional manner, i.e. the travel is proportional to the voltage on the electric motor. Such an actuator is particularly suitable for actuating hydraulic valves.

Claims (3)

1. Elektro-mechanischer Stellantrieb, dadurch gekennzeichnet, daß ein Elektromotor (10) über eine Schlupfkupplung (11) ein nicht selbsthemmendes Getriebe (12) antreibt, dessen eine geradlinige Bewegung ausführendes Ausgangsglied durch Federn (14, 15) in einer vorbestimmten Stellung zentrierbar ist.1. Electro-mechanical actuator, characterized in that an electric motor (10) via a slip clutch (11) drives a non-self-locking gear (12), the output member performing a linear movement can be centered in a predetermined position by springs (14, 15) . 2. Antrieb nach Anspruch 1, dadurch gekennzeichnet, daß der Elektromotor ein Gleichstrommotor ist.2. Drive according to claim 1, characterized in that the electric motor is a DC motor. 3. Antrieb nach Anspruch 1 und/oder 2, dadurch gekennzeichnet, daß das Ausgangsglied bei Stromausfall durch die Federn in einer festgelegten Mittelstellung gehalten bzw. in diese zurückgeführt wird.3. Drive according to claim 1 and / or 2, characterized in that the output member is held in a fixed central position or returned to it in the event of a power failure by the springs.
EP82109912A 1981-11-07 1982-10-27 Electromechanical positioning drive Withdrawn EP0078982A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813144280 DE3144280A1 (en) 1981-11-07 1981-11-07 ELECTRO-MECHANICAL ACTUATOR
DE3144280 1981-11-07

Publications (1)

Publication Number Publication Date
EP0078982A1 true EP0078982A1 (en) 1983-05-18

Family

ID=6145860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82109912A Withdrawn EP0078982A1 (en) 1981-11-07 1982-10-27 Electromechanical positioning drive

Country Status (2)

Country Link
EP (1) EP0078982A1 (en)
DE (1) DE3144280A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348854A2 (en) * 1988-06-28 1990-01-03 Deere & Company Actuating device for at least one valve
WO2002036994A2 (en) * 2000-11-06 2002-05-10 Siemens Aktiengesellschaft Setting device for an adjustable gearing mechanism
EP3753468B1 (en) 2016-03-31 2022-01-19 MEIKO Maschinenbau GmbH & Co. KG Cleaning device and method for cleaning items

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558098A (en) * 1945-05-19 1951-06-26 Westinghouse Electric Corp Operating mechanism
US3161074A (en) * 1962-02-14 1964-12-15 Korthaus Helmut Electromotive adjusting device
DE1296697B (en) * 1963-01-02 1969-06-04 Betzing Rudolf Electric brake release device
DE1500418A1 (en) * 1964-03-23 1969-09-18 Jordan Controls Inc Control device
DE2910725A1 (en) * 1979-03-19 1980-10-02 Klose Elektrotech Electric motor drive switch point shifter - has turbo-clutch between motor rotor and circulating spherical nut, through which passes setting rod

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558098A (en) * 1945-05-19 1951-06-26 Westinghouse Electric Corp Operating mechanism
US3161074A (en) * 1962-02-14 1964-12-15 Korthaus Helmut Electromotive adjusting device
DE1296697B (en) * 1963-01-02 1969-06-04 Betzing Rudolf Electric brake release device
DE1500418A1 (en) * 1964-03-23 1969-09-18 Jordan Controls Inc Control device
DE2910725A1 (en) * 1979-03-19 1980-10-02 Klose Elektrotech Electric motor drive switch point shifter - has turbo-clutch between motor rotor and circulating spherical nut, through which passes setting rod

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0348854A2 (en) * 1988-06-28 1990-01-03 Deere & Company Actuating device for at least one valve
EP0348854A3 (en) * 1988-06-28 1990-10-31 Deere & Company Actuating device for at least one valve
WO2002036994A2 (en) * 2000-11-06 2002-05-10 Siemens Aktiengesellschaft Setting device for an adjustable gearing mechanism
WO2002036994A3 (en) * 2000-11-06 2003-01-30 Siemens Ag Setting device for an adjustable gearing mechanism
EP3753468B1 (en) 2016-03-31 2022-01-19 MEIKO Maschinenbau GmbH & Co. KG Cleaning device and method for cleaning items

Also Published As

Publication number Publication date
DE3144280A1 (en) 1983-05-19

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19821027

AK Designated contracting states

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19830810

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HESSE, HORST, DR.DIPL.-ING.

Inventor name: WEIGLE, DIETER, DIPL.-ING.